Home / 20,989.24-31,476.30-6,946.68

Finding the Fourth Proportional to 20,989.24, 31,476.30 and 6,946.68

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Solution

The fourth proportional to 20,989.24, 31,476.30 and 6,946.68 is: 10,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.24 : 31,476.30 = 6,946.68 : x
  2. Step 2: Convert to fraction form
    20,989.24/31,476.30 = 6,946.68/x
  3. Step 3: Cross multiply
    20,989.24x = 31,476.30 × 6,946.68
  4. Step 4: Simplify right side
    20,989.24x = 218,655,783.68
  5. Step 5: Solve for x
    x = 218,655,783.68/20,989.24
  6. Step 6: Final answer
    x = 10,417.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.